The Far Morocco Idrisid Arts and their role in enriching the plaster wall processing in the southwest Saudi Arabian kingdom in the century (14th AH/ 20th AD)

Studying the methods of plaster wall decorations is considered one of the complementary elements of the architectural vocabulary that reflects the cultural and ideological heritage identy of the time period. Wall decoration has broken the barrier of time and place,  and the political and doctrinal differences, expressing in an abstract way the truth about the beilefs of both the Far Morocco Idrisid and Sebia Idrisid in kingdom of Saudi Arabia, where they did not use any symbol or sign that demonstrates their belonging to Shi'i Muslims, so-most probably- they belong to Sunni Muslims. This study aims to track the foundation phases of Idrisid state in Far Morocco during the century (2-4THA.H/8-10TH A.D) and its extension to the east in the Tihama Asir region during the century (14THAH/20THAD). The research problem lies in trying to detect the link and the nature of the relationship between the two states despite their differences in time and place through studying the natural strategic crossings, as well as the political circumstances that contributed in the transfer of the  influences of Far Morocco Arts to Sebia region  in the southwest of the Kingdom of Saudi Arabia, which contributed in enriching the plaster decorative arts of the facades of the Idriss Ashraaf's palaces, and their  merging with the local artistic nature of Najd, Yemen. This study has revealed- through following the analytical descriptive method- the emergence of some influnces coming from the countries of East Asia and India and the countries of the African continent  due to  Sebia's geographical location as a port on the Red Sea and its presence on both the coastal trade way and caravans.